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dovidf
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xp system freezing and has other problems

The system was working fine for a long time.

The system is very slow and randomly freezes. I have run malwarebytes on it and cleaned up some malware but it still reports errors.

Attempts to go into safe mode are stopped by a message that windows prevented the boot to prevent damage to the system with error 7e. It boots normally into xp sp3.

I was thinking of running chkdsk without repair to see if the hard disk reports errors. If it does, I am thinking of saving it and then trying to a chkdsk /r.

What is the likely cause of the problem?
Windows XPPCComponents

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dovidf

8/22/2022 - Mon
SOLUTION
jdwheeler1981

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akahan

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Neil Russell

Copy off your data and reinstall from scratch. This kind of issue after a virus removal will normally take you lots lots more time to solve, IF you can, than it will take to reinstall everything.
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Richard Schilke

Thanks nobus I didn't know about UBCD.... Awesome!
dovidf

ASKER
I've run chkdsk /r since the drive seemed to be ok and it ran through. I killed a task that was eating memory.

However, now it is freezing up in the middle of Internet Explorer and does not respond to anything without a reboot.

The 7e error in safe mode is on the kdcom.dll module.

The system does not seem to boot on a cdrom even though the bios indicates the cdrom as the first boot device.
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akahan

Did you follow up the chkdsk /r with an sfc /scannow?
dovidf

ASKER
Yes and it was clean. I ran tdsskiller and it found a rootkit and removed it. I am checking out the system now.
nobus

try the minimum setup, as described in
https://www.experts-exchange.com/Hardware/Components/Motherboards/A_1945.html

it can be the cd drive, or cd media is bad - so can you test with another bootable CD, or another cd drive?
Or test this cd or drive on another PC.

note : chkdsk is not a disk diag- it checks the file system ; so i suggest still to run the disk diag, as suggested
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dovidf

ASKER
I installed process explorer and noticed that the meager memory of around 500 megs was full and there was a task there that was pushing it into virtual memory that wasn't needed. I got rid of that task and the system stays below the max. The cpu usage otherwise was not overly high.

I suspected disk problems due to weird crashes and thought perhaps the program modules were corrupt. I also thought that the slowness could be due to disk errors since I had already ran a Malwarebytes scan to eliminate malware issues. However, scannow and chkdsk indicated that there was no real disk problem.

Reinstalling from scratch was too much of an effort and wasn't yet fully warranted.

Tdsskiller's removal of the rootkit has the system performing normally and that seems to have been the problem all along.

I haven't rechecked on the kdcom 7e error but it can be corrected by going into the repair console and entering disable intelppm
nobus

why don't you run the diask diag, as sugggested?  i pointed out that chkdsk is NOT a disk diag
but it's your choice..
dovidf

ASKER
There is not enough evidence of a disk problem and too much work to strip the system down for a test.
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dovidf

ASKER
Tdsskiller removed the rootkit and solved the problem